This program considered three primary explosives: lead styphnate, lead azide, and tetracene. An experimental investigation was conducted to measure the peak pressures and positive impulses from explosions in systems simulating actual in-process configurations and quantities. Variables considered included material weights, configurations, and whether or not the material was in a wet or dry condition. Peak pressure and positive impulse was measured in the scaled distance range of 3 to 40 ft/lb to the 1/3 power. TNT equivalency curves for both pressure and impulse were developed as a function of scaled range.